190-00879-08
GPS 18x Technical Specifications
Rev. B
Page 3
1.3
OVERVIEW
The GPS 18x series products include an embedded receiver and an antenna. Based on the proven technology found
in other Garmin GPS receivers, the GPS 18x tracks multiple satellites at a time while providing fast time-to-first-fix,
precise navigation updates (five times per second for the GPS 18x-5Hz, and once per second for the GPS 18x USB,
18x PC, and 18x LVC), and low power consumption. This generation of GPS sensors includes the capability of FAA
Wide Area Augmentation System (WAAS) differential GPS.
The GPS 18x design uses the latest technology and high-level circuit integration to achieve superior performance
while minimizing space and power requirements. The hardware capability combined with software intelligence
makes the GPS 18x easy to integrate and use.
The GPS 18x series products are designed to withstand rugged operating conditions and are waterproof
to IEC
60529 IPX7, immersion in 1 meter of water for 30 minutes. These complete GPS receivers require minimal
additional components to be supplied by an OEM or system integrator. A minimum system must provide the GPS
with a source of power and a clear view of the GPS satellites. Internal FLASH memory allows the GPS to retain
critical data such as satellite orbital parameters, last-known position, date and time. End user interfaces such as
keyboards and displays are the responsibility of the application designer.
1.4
FEATURES
•
GPS receiver tracks and uses multiple satellites for fast, accurate positioning and velocity estimates.
•
Differential DGPS capability using real-time WAAS corrections yielding position errors of less than 3
meters.
•
Compact, rugged design ideal for applications with minimal space.
•
Factory configuration meets the needs of most systems that expect NMEA 0183 data from a GPS receiver.
Configuration commands are available to customize the NMEA 0183 output (see
•
(GPS 18x LVC and GPS 18x-5Hz only) Highly accurate measurement pulse output for precise timing
measurements: one-pulse-per-second (1 Hz) for the GPS 18x LVC or 5 Hz for GPS 18x-5Hz. Pulse width
is configurable in 20 millisecond increments from 20 ms to 980 ms with 1
μ
s accuracy.
•
Configurable for binary format data output.
•
FLASH-based program allows new software revisions through a Web site download.
•
Non-volatile memory does not require battery backup.
•
Onboard rechargeable backup battery can maintain the real-time clock for up to 10 days.
•
Configurable parameters include expected position, current time and date, and preferred position fix type
(3D or automatic).
•
Waterproof design allows continuous exposure to the prevailing weather conditions at most locations.
